Friber, M.A.; Guimarães, A.C.R.; Martins, C.A.; Soares, J.S. Study of the Mining Waste in the Production of Calcined Aggregate for Use in Pavement. Minerals2023, 13, 1543.
Friber, M.A.; Guimarães, A.C.R.; Martins, C.A.; Soares, J.S. Study of the Mining Waste in the Production of Calcined Aggregate for Use in Pavement. Minerals 2023, 13, 1543.
Friber, M.A.; Guimarães, A.C.R.; Martins, C.A.; Soares, J.S. Study of the Mining Waste in the Production of Calcined Aggregate for Use in Pavement. Minerals2023, 13, 1543.
Friber, M.A.; Guimarães, A.C.R.; Martins, C.A.; Soares, J.S. Study of the Mining Waste in the Production of Calcined Aggregate for Use in Pavement. Minerals 2023, 13, 1543.
Abstract
The present study aimed to evaluate the technical feasibility of using a calcined aggregate with mining residue in different pavement layers, including base, sub-base, and wearing course. For this purpose, the physical characterization of the residue and clay was performed, as well as the production of calcined aggregates at temperatures ranging from 800ºC to 1100ºC. Additionally, the suitability of these aggregates in pavement layers was assessed, considering the current standards. The physical results characterization indicated that the studied clay is suitable for manufacturing calcined clay aggregates since the particle size distribution showed ceramic potential - according to the Winkler diagram - and presented a plasticity index (PI) higher than 15%. In the tests of boiling-induced mass loss and unit mass, the values obtained were within the limits established by the standards, being lower than 10% and 0.88 g/cm3, respectively. Regarding the abrasion loss test, the M1100 aggregate showed "Los Angeles" abrasion values lower than the limit established by the standard, demonstrating its potential as an artificial aggregate in pavement applications.
Keywords
Pavement; Aggregate; Calcined Clay
Subject
Engineering, Transportation Science and Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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